Dust-guard for car-axle boxes



'KNO'MOOSU L. GOULL'IGUD. DUST GUARD FOR CAR AXLB BOXES. No. 404,701..Patented June 4, 1889r N. PETERS. Pmmmmgnpmr. wmingmn. D. c.

UNITED nSTATES PATENT OFFICE.

LOUIS GOULLIOUD, OF MONTREAL, QUEBEC, CANADA, ASSIGNOR TO THE UNIONBEARING AND LUBRICATOR COMPANY, OF PORTLAND, MAINE.

DUST-GUARD FOR CAR-AXLE BOXES.

SPECIFICATION forming part of Letters Patent No. 404,701, dated June 4,1889.

`Application filed January 4, 1889. Serial No. 295,478. (No model.)Patented in Canada January 3l, 1889, No. 30,680.

To all whom it may concern:

Be it known that I, LoUIs GoULLIoUD, of the city of Montreal, in theDistrict of Montreal and Province of Quebec, Canada, have 5 invented acertain new and useful Improved Dust-Guard for Car-Axle Boxes, (forwhich I have already obtained Letters Patent of Canada, No. 30,680,bearing date January 3l,

1889;) and I do hereby declare that the fol- [o lowing is a full, clear,and exact description of the same.

My invention, although denominated a dust-guard, and serving to keepdust and grit out of the axle-box, is primarily intended I5 to preventthe escape of liquid lubricant.

It may be thus brieiiy described: Ipropose to face up perfectly true theoutside face of t-he back plate of the axle-box, and to secure to itsprojecting sides by bolts or other suitzo able means a second platehaving its correspending or inner face trued up in the same way as theback plate of the box. On the under side of this second plate is formeda projecting rib fitting in between the projecting sides of the axle-boxand butting up against the face of t-he back plate. In both these platesare formed the usual oval openings for the axle to pass through. Betweenthese two planed surfaces is mounted upon 3o the axle the dust-guardproper. This Iform of a substance which must combine the qualities ofnon-permeability, so that no liquid lubricant can pass through it, andnon-susceptibility to wear, so as to do away with the 3 5 necessity ofdevices for keeping' the guard in contact with the axle, and at the sametime have the power of expansion, so that any compressive force exertedon the edges or periphery will force out the surfaces. I have 4o byexperience found that cork will lill all these conditions, and Itherefore propose to form my dust-guard proper of that substance. Thedisk or plate is perforated so as to lit on the axle. This cork disk orplate will have both surfaces trued up and smoothened so that they shallbe perfectly in contact with the trued-up faces of the plates when thedisk is expanded laterally by the compression of the periphery. Thisdisk or plate is usually 5o formed with its lower part semicircular, ornearly so, the sides converging from about the center or axis and endingin a fiat top. Upon this is set a plate, through the ends of which andof another plate some little distance above it pass the ends of a thinmetal compression band closely surrounding the disk. Compression isexerted by the band upon the disk through the action of a setscrewpassing through the top plate and working on the lower one, so as todraw the 6o ends of the strap together.

For full comprehension of the invention, reference must be had to theannexed drawings, forming Iart of this specification, in which- Figure 1is a top view of the rear part of an axle-box embodying myinvention;Fig. 2,

a sectional elevation taken on line Fig. l; and Fig. 3, a similar viewon line zz, Fig. 2.

Similar letters of reference indicate like 7o parts.

As no particular construction of the axlebox is claimed, no allusionwill be made to it further than to say that A is the back plate, piercedin the usual way for the axle, and with projections A. Its rear face isplaned to a perfectly true surface.

B is the additional or supplementary plate with projection B on itslower edge, fitting in between the side projections A and hay- 8o ingits front face trued up to correspond with the rear face of A. It has ofcourse an opening identical with that in A for the passage of the axle.

D is a disk or plate of cork, having its faces 8 5 worked perfectlysmooth to correspond with the meeting faces of A and B, and mounted onthe axle. It is preferably of the shape shown in Fig. 2, and partiallyencircled by a metal band or compression-strap E. 9o

F is a plate resting on the top of D, and G a plate set at some littledistance above F, through both of which the ends of the strap E pass.

His a set-screw working through the top plate G and pressing upon theplate F, so that by its action the disk D will be compressed, thusgiving a perfectly tight joint round the axle and against the meetingfaces of A and I3. Ioo

lVhat I claim is as follows:

l. The combination, with the back plate of an axle-box, ofasupplementary plate secured thereto, leaving Space between them, theinnel' faces of both plates being ti'ued up, a cork disk mounted 0n theaxle, and a band partially surrounding the periphery of the disk andprovided with a device for tighteningI it up on same, all substantiallyas herein set foi-th.

2. The combination,with the back plate A of anaxlebox, of the platelseenred t0 same, 1o single coi-k disk l), mounted on axle betweenplates, strap E, encii'eling such disk, plates F and G, and set-serewII, all substantially as herein described.

LOUTS GOULTOUT). \Vitnesses:

JOHN Ress, GEO. D. 'IfUei-ii.

